No Sleep is freeware that prevent computer from idle going into sleep mode, user sometime execute long time task that interrupted by windows system going into sleep mode for long time idle, this. Microsoft A computer's sleep process is helpful in a couple of ways. First, it reduces the power consumption of the computer, saving you a few pretty pennies in the long run. Vista stop shutdown when downloading=1; Utility to stop sleep mode when a certain program is running? Keep computer from falling asleep when a certain service is running and power options to prevent computer to sleep download? Stop monitor from going to sleep, application, pixel =1 and a software which don't allow you to turn off pc? Disable monitor going to sleep while watching embedded video I like keeping my power settings to turn off hard drives and monitors when I am not using my computer to save power. But when watching embedded video (like youtube) windows thinks I am not doing anything and kicks in the power savings effectivly turning off my monitor. For Windows 8.1 / Windows RT 8.1. Move your mouse to the lower left-hand corner of the screen and right-click the Start button or press Windows logo key + X on your keyboard. Tap or click Shut down or sign out and choose Shut down. Click the Start button and then click the Shut down button.
To prevent Windows from going into standby / sleep after certain period of inactivity you can use free utility developed by David Anson called Insomnia. You can download from here or from author's MSDN blog.
There is no need to install anything, simply unzip the file and run either 32 or 64 bit version depending on your Operating System. While utility is running computer will not go into sleep mode because of inactivity.
This, however, doesn't prevent computer from going to sleep if user presses sleep button in the start menu or on the keyboard.
To disable sleep mode completely you can use Local Group Policy: Pull tube 1 3 49.
Launch Local Group Policy Editor (gpedit.msc)
Navigate to Computer Configuration > Administrative Templates > System > Power Management > Sleep Settings
Open Policy called Allow Standby States (S1-S3) When Sleeping (Plugged In) and set value do Disabled
If necessary also do the same for Allow Standby States (S1-S3) When Sleeping (On Battery)
Since I needed to enable / disable sleep mode via Group Policy quite often, I created quick and dirty AutoIt script that opens Local Group Policy Editor and navigates to the correct GP:
This policy will disable all sleep modes completely.
To also disable Hibernate mode (standby state S4) run powercfg.exe /hibernate off in an elevated command prompt:
Start > type Command Prompt > right click on Command Prompt and click Run as Administrator
Type powercfg.exe /hibernate off and press Enter
Windows 7 Pro Windows 8 Pro
Nosleep 1 1 – Prevent Computer Sleep Monitors Best Buy
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By default Windows 10 will make a laptop computer to go sleep when the lid is closed.